7e. Wrap the fin guide around the PVC pipe at the
base of the body tube and mark on the 3s for a 3-fin
model or the 4s for 4 fins.

7f. Fold the fins on the dashed lines, then stack them
together and trim the tops and bottoms at an angle.

7g. Glue the fins together with a glue stick, and pinch
them to adhere them. Make sure you don’t glue the
tabs that will be used to attach the fins to the rocket.

7h. Line up the fins with the marks on the bottom
of the body tube. Tape all fins securely in place.

Your rocket is now complete and ready to launch.
The great thing about these rockets is that no
matter how they’re built, they will fly! Some of
course will fly better than others, but they all
will fly to some degree.